int i=0;
main()//唐子豪
{
    unsigned n;
    printf("Please enter the number of discs:");
    scanf("%d,&n");
    printf("\tneedle:\ta\t b\tc\n");
    movedisc(n,'a','c','b');
    printf("\t Total:%d\n",i);

}
movedisc(n,fromneedle,toneedle,usingneedle)
    unsigned n;
    char fromneedle,toneedle,usingneedle;
    {
        if(n>0){
            movedisc(n-1,fromneedle,usingneedle,toneedle);
            ++i;
            switch(fromneedle){
                case'a':switch(toneedle){
                    case'b':printf("\t[%d]:\t%2d.............>%2d\n",i,n,n);
                        break;
                    case'c':printf("\t[%d]:\t%2d..................>%2d\n",i,n,n);
                        break;
                }
                break;
                 case'b':switch(toneedle){
                    case'a':printf("\t[%d]:\t%2d<...................%2d\n",i,n,n);
                        break;
                    case'c':printf("\t[%d]:\t%2d..............>%2d\n",i,n,n);
                        break;
                }
                break;
                case'c':switch(toneedle){
                    case'a':printf("\t[%d]:\t%2d<.............%2d\n",i,n,n);
                        break;
                    case'b':printf("\t[%d]:\t%2d<..........%2d\n",i,n,n);
                        break;
                }
                break;
                
                

            }
            movedisc(n-1,usingneedle,toneedle,fromneedle);
        }
    }